audio-driver: Update build files for sa6155

Enable conditional build for audio driver modules
specific to sa6155.

Change-Id: I58701a907242afcfe230623ff42b47c001e3d5f4
Signed-off-by: Rahul Sharma <rahsha@codeaurora.org>

ipc/Kbuild

@@ -16,9 +16,15 @@ endif
 
 ifeq ($(KERNEL_BUILD), 0)
         ifeq ($(CONFIG_ARCH_SM6150), y)
-                include $(AUDIO_ROOT)/config/sm6150auto.conf
-                export
-                INCS    +=  -include $(AUDIO_ROOT)/config/sm6150autoconf.h
+		ifdef CONFIG_SND_SOC_SA6155
+			include $(AUDIO_ROOT)/config/sa6155auto.conf
+			export
+			INCS    +=  -include $(AUDIO_ROOT)/config/sa6155autoconf.h
+		else
+			include $(AUDIO_ROOT)/config/sm6150auto.conf
+			export
+			INCS    +=  -include $(AUDIO_ROOT)/config/sm6150autoconf.h
+		endif
         endif
         ifeq ($(CONFIG_ARCH_TRINKET), y)
                 include $(AUDIO_ROOT)/config/sm6150auto.conf